Vulnerability Details CVE-2018-15858
Unchecked NULL pointer usage when handling invalid aliases in CopyKeyAliasesToKeymap in xkbcomp/keycodes.c in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 24.8%
CVSS Severity
CVSS v3 Score 5.5
CVSS v2 Score 2.1
References
- https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f
- https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html
- https://security.gentoo.org/glsa/201810-05
- https://usn.ubuntu.com/3786-1/
- https://usn.ubuntu.com/3786-2/
- https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f
- https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html
- https://security.gentoo.org/glsa/201810-05
- https://usn.ubuntu.com/3786-1/
- https://usn.ubuntu.com/3786-2/
Products affected by CVE-2018-15858
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cpe:2.3:a:xkbcommon:libxkbcommon:-
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cpe:2.3:a:xkbcommon:libxkbcommon:0.2.0
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cpe:2.3:a:xkbcommon:libxkbcommon:0.3.0
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cpe:2.3:a:xkbcommon:libxkbcommon:0.3.1
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cpe:2.3:a:xkbcommon:libxkbcommon:0.3.2
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cpe:2.3:a:xkbcommon:libxkbcommon:0.4.0
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cpe:2.3:a:xkbcommon:libxkbcommon:0.4.1
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cpe:2.3:a:xkbcommon:libxkbcommon:0.4.2
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cpe:2.3:a:xkbcommon:libxkbcommon:0.4.3
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cpe:2.3:a:xkbcommon:libxkbcommon:0.5.0
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cpe:2.3:a:xkbcommon:libxkbcommon:0.6.0
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cpe:2.3:a:xkbcommon:libxkbcommon:0.6.1
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cpe:2.3:a:xkbcommon:libxkbcommon:0.7.0
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cpe:2.3:a:xkbcommon:libxkbcommon:0.7.1
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cpe:2.3:a:xkbcommon:libxkbcommon:0.7.2
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cpe:2.3:a:xkbcommon:libxkbcommon:0.8.0
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cpe:2.3:a:xkbcommon:xkbcommon:*
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cpe:2.3:o:canonical:ubuntu_linux:14.04
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cpe:2.3:o:canonical:ubuntu_linux:16.04
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cpe:2.3:o:canonical:ubuntu_linux:18.04